Create a new Message.file property (#1168)

readthedocs/extra/reference.rst

@@ -216,6 +216,7 @@ Properties
     forward
     buttons
     button_count
+    file
     photo
     document
     web_preview
@@ -255,6 +256,31 @@ Methods
     get_buttons
 
 
+File
+====
+
+The `File <telethon.tl.custom.file.File>` type is a wrapper object
+returned by `Message.file <telethon.tl.custom.message.Message.file>`,
+and you can use it to easily access a document's attributes, such as
+its name, bot-API style file ID, etc.
+
+.. currentmodule:: telethon.tl.custom.file.File
+
+.. autosummary::
+    :nosignatures:
+
+    id
+    name
+    width
+    height
+    size
+    duration
+    title
+    performer
+    emoji
+    sticker_set
+
+
 Conversation
 ============
 

readthedocs/telethon.tl.custom.rst

@@ -18,6 +18,14 @@ telethon\.tl\.custom\.dialog module
     :undoc-members:
     :show-inheritance:
 
+telethon\.tl\.custom\.file module
+---------------------------------
+
+.. automodule:: telethon.tl.custom.file
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
 telethon\.tl\.custom\.message module
 ------------------------------------